On my tablet PC with Kubuntu 12.10 using the latest x64 build from the achadwick repo I have the same problem.

I can drag-and-drop brushes fine with the trackpad, but when using the stylus if the dragged brush crosses a grid boundary in the brush list before it leaves the bounds of the list, excepting the top and left grid boundaries, or it leaves the list bounds and re-enters it gets stuck within the bounds of the list (using the trackpad the brush can be freely dragged over grid boundaries, leave and re-enter without getting stuck).

Hi,
I am not good enough in linux to do all this.
But what I did is to switch for Kunbutu 12.04 ( with kde ) to unbutu 12.04 ( non kde, if I understood well ).
then I install MyPaint git.
So it's a very fresh install, with all initial parameters.

Can't reproduce this one. Can you give me some more information on how to make it happen? Ideally minimal steps from a completely fresh config:

I've tried dragging from the list of brush icons to the list of brush group names, and from one shift-clicked group to another (so that both groups are shown simultaneously). I can't reproduce this under Xubuntu 12.04.

If it doesn't happen with a fresh config, and it's still happening with your working setup, can you let me know whether there's any difference in numbers of brushes, numbers of visible brushes, numers of columns?

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